Telephone-call recorder.



H. L, WARWICK.

TELEPHONE CALL RECORDER.

APPLICATION FILED APR.15,1912.

1 ,041,536, Patented Oct. 15, 1912.

SSHEBTB-SHBET l.

@Hoang H. 11. WARWICK.

TELEPHONE GALL RECORDER.

APPLIGATIOH rum APE.15,1912.

Patented 0G11. 15, 1912.

3 SHEETS-SHEET 2.

H. La. WARWICK. TELEPHONE GALL RECORDER.

APPLICATION FILED APB.15,1912.

1,041,536. Patented 001.1511912.

3 SHEETS-SHEET 3.

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l 1 Jl HAROLD L. WARWICK, OF FORT WORTH, TEXAS.

TELEPHOE-CALL RECORDER.

Specification of Letters Patent.

Patented Oct. 15, 1912.

Application led April 15, 1912. Serial No. 690,989.

To all whom it may concern.-

VBe it known that T, HAROLD L. WARWICK, citizen of the United States, residing at Fort lVorth, in the county of Tarrant and State of Texas, have invented certain new and useful improvements in Telephone-Call Recorders, of which the following is a specification.

My invention relates to telephone recording devices and more particularly to devices to be used with established telephone eX- changes. and the object is to provide Simple and inexpensive devices to be located at any subscribers telephone and which can be opcrated from the central oiiice and which opcrates automatically when 'the connection is made at the central oilice.

The advantages are that when the line is busy, the operator at the telephone exchange can record the number of the party calling in the oitice of the party who is talking so that the party can see who has called while he was talking. Tn this manner a person will not have to call repeatedly and be told that the line is busy.7 He can call and if the line is busy, be can wait and attend to other business and know that he will be called as soon as the party leaves the line. This will save time of the person who wants to call and save time of central Tf a person calls and central. answers,-No one answers,7 central or some other operator can record the call at the telephone where no one answered. This will be a great advantage in otlices where there is no one to answer the call. Whenkasubscriber returnsmto.hisoflice, he ca see who" has called while he was out.A Central, 'ofthe operator who attends to the recording mechanism, can record a number at the subscribers telephone without in any manner disturbing the conversation which the subscriber may be carrying on over the telephone. The addition can be made to the established telephone system with very small expense as there wiltA be very little more wiring.

@ther objects and advantages will be fully explained in the following description and the invention will be more particularly pointed out in the claims.

Reference is had to the accompanying drawings which form a part of this application. A

Figure l is a diagrammatic view, illustrating the complete device assembled, some parts being in conventional form. Fig. 2 is a detail view of the type-wheel ratchet releasing mechanism. Fig. 3 is a detail view of the contacts in the sending mechanism. Fig. a is a. detail view of the train of gearing used in the sending device. Figs. 5 and G are detail views of the keys of the sending device. Fig. 7 is an enlarged section of the record tape. Fig. 8 is a detail view of the magnets for effecting the-printing and also a view of the type-wheel and the spring for returning the typeswheel to normal position.

Similar characters of reference are used to indicate the same parts throughout the several views.

The sending mechanism includes a series of push buttons,-one button for each one of the ten digits and a button for indicating each exchange and one but-ton for long distance. Each button l is provided with a stem 2 and a spring 3 for returning the button to normal or inoperative position. Each stem 2 is pivotally connected to a crank 4 which is rigid with a shaft 5 which operates va train of gearing of ordinary type and this gearing will not be described in detail. A push ona button will wind a spring G to sufficient tension to actuate the train'of gearing. This train of gearing terminates with an impulse sending wheel 7. Each impulse wheel is provided with one or more teeth or projections 8 and one projection 9 on the periphery thereof and these projections constitute contacts for actuating the type wheel hereinafter described. The difference between projection 9 and the projections 8 is that the projection 9 is longer and insulated from wheel 7 and will make a different connection for sending an impulse with a greaterI voltage than will be sent by the contacts S. The sending device or mechanism is indicated by 10. The sending mechanism is operated through the telephone switch board or exchange and may be operated by central or some operator designated for such work. The sending mechanism is connected to a supply source of electricity, as to batteries 62, by a wire 63 which is connected to a portion of the batteries l1 and to the frame of the sending mechanism 10. An insulated contact 13 is provided in the sending mechanism and stands in the path of the projections 8 of the impulse wheel 7. rThis contact 13 is connected by wire 14 to a plug 15 which is used to make connection with any subscribers telephone which is connected with the multiple 1G. A line 17 is shown leading from the multiple or exchange t-o a subscrihers telephone 5 which is supplied with a recording device.

The object of the contact or projection 9 is to change the voltage which passes through the wire 17. The projection 9 will press a contact 19 against the contact 13. The con- 10 tact 19 is connected to all of the batteries 62 so that, if the batteries consist of six cells and three cells are connected with the wire G3 for sending impulses through contact 13 and all the cells are connected in the circuit with the contact 19,'the voltage will be doul'bled when the circuit is switched from the circuit through the wire 63 to the circuit through wire 18. Thus the wheel 7 will send an impulse of the lower voltage through the contact 13 whenever one of the actuate the recording mechanism hereinafter described. X

The recording mechanism is shown in Fig. 1. A wire 20 is connected with a binding post 21 and the binding post 21 is connected by a wire 22 with the magnet 23. T he binding post 21 is also connected by Wire 24 to` an armature 25 which will be drawn to the magnet 23 whenever this' magnet is energized. A spring 26 is used to restore the armature 25 to normal` position as soon as the magnet 23 is denergiz'ed. A screw 27 is used to regulate the tension of the spring 26. The recording mechanism is provided with a type-wheel 28 on the periphery of which are formed digits and lette-rs. rlhis wheel is actuated by a ratchet wheel 29 rigid therewith. The armature 25 carries a dog 30 which is adapted to engage the teeth on the ratchet wheel 29 and will turn this ratchet wheel and the type-wheel 28 one space with every movement of the armature 25 toward the magnet 23. r1`his will be done every time an impulse is sent'through the magnet 23. A cam 31 on the dog 30 will detach the dog 30 from the ratchet wheel Whenever the cam 31 rides up on the lug 32. Adjusting screws 33 limit the movement of the armature 25. An inliing roller 34 is provided with means tor spreading ink on the type of the wheel 28. The dog 30 will actu ate the type-wheel 28 as long as impulses are sent by the teeth 8 without recording any number, but when the tooth or contact 9 sends an impulse the dog will move the type-wheel one space or type just as when the impulses were sent by teeth 8. At the same time, on account of the higher voltage sent by the contact 9, the current will be switched out of the magnet 23 to the magnet 35. Magnet 35 will attract the armature 36 which is mounted on bar 45 which is pivotally mounted. bar is mounted a hammer 37 which will strike the type-wheel 28 and drive a strip of paper 38 against the type en the periphery thereof and thus print the digit to be printed. The paper strip 38 is drawn from a spool 39 and is drawn ott by two rollers 4() which are driven by a ratchet wheel 41 which is rigid with one ot the wheels 40.

The dog 41 is operated b v the pivoted bar- 45. An arm 42 is carried by the bar 45 and a spring dog 43 is pivotally connected to the arm 42 and held against the wheel 41 by a spring 14. 'lhe movement of the bar 45 will operate the dog 43. A spring 46 will restore the bar 45 to normal position and the tension of this spring is regulated by a screw 47. The current is switched from the magnet 23 to the magnet 35 when the contact 48 carried by the armature 25 is drawn in contact with the screw 49 which is electrically connected with the magnet 35 by a wire 50. rIhe magnet 23 is electrically 'connected with the magnet 35 by a wire 51. The stronger voltage sent by the. tooth or contact 9 will cause the armature to close the circuit through the contact 48 to magnet. 35. The current is grounded by a wire 53 which connects with a binding post 54 which is connected to the wire by a wire 55. An adjusting screw 56 is used to control the movement of the bar 45. A spring dog 57 prevents the ratchet wheel 29 from turning when the dog 30 is riding over the teeth 8 and 9 and a notched wheel 58 on the wheel 40 is used to release the dog 57 so that the wheel 29 can be turned by the dog 30 when the wheel 40 is rotated.V The type wheel 28 and the ratchet wheel 29 are rigid on the same shaft and the type wheel is brought back to normal position by a spring A pin 60 which is rigid in the casing stops the type wheel at normal position. The type wheel 28 has a lug 61 which abuts against the pin 60.

1n operation the sending device is actuated by'pushing the button for each digit which makes up the vnumber of the telephone wanted. rhe wheel Y7 is rotated and every tooth 8 on the wheel will send an impulse which will cause the type wheel to rotate one space or the distance of one type. The cur-v rent for sending the impulses comes from the source of electricity through the frame of the sending mechanism.Y Batteries or cells 62 are shown electrically connected to theframe by a wire 63 which will feed from only half of the battery cells. When the tooth 9 passes the current comes from all the cells 62 and thus sends a greater Voltage through the wire 14. This will cause the dog 30 to move the type wheel 28 into position to print the number wanted. At

the same time the armature 25 will make 0n the other end of the- Contact or close the circuitthrough contact 49 and thus switch the current from magnets Q3 to the magnet 35 by which the hammer 37 is made to knock the paper 38 against the type on wheel 2S. Any suitable type of digits and letters may be formed on the periphery of wheel Q8 to register calls Iliade. If no teeth 8 are on wheel 7, a push on the butto-n would record a 0. If the wheel 28 has one tooth 8, a push on the corresponding button would record 1, etc. It is apparent that various arrangements of the operating mechanism and the digits and the letters can be made without departing from my invention.

What I claim, is,-

1. A telephone call recorder comprising a multiple switch-board, line circuits connected thereto, local stations on said line circuits, an impulse sending mechanism consisting of a plurality of graduated operating elements any one of which is provided with means for connecting with any unit of said switch board, and including a wheel carrying means for switching from a lower voltage in said circuits to a higher voltage, and means at `the local station forrecording the impulses sent over said line wires.

2. A telephone call recorder comprising a multiple switch-board, line circuits connected thereto, local stations on said line circuits, an impulse sending mechanism consisting of a plurality of independent graduated operating elements any one of which is provided with means for connecting with any unit of said switch-board and including a plurality of contacts acting successively and the last contact doubling the voltage, and means at the .local station for recording the impulses sent over said line wires.

8. A telephone call recorder comprising a multiple switch-board, line circuits connected thereto, local stations on said line circuits, an impulse sending mechanism consisting of a plurality of independent operating elements for sending one or more impulses and each element including contacts corresponding to impulses to be sent and the last contact doubling the voltage, means for connecting any one of said elements to said switch board, and means at the local stations for recording the last impulse sent over said line circuits by each one ot' said operating circuits.

4. A telephone call recorder comprising a multiple switch-board, line circuits connected thereto, local stations on said line circuits, an impulse sending mechanism consisting of a plurality of independent operating elements each including a rotatable wheel and a contact maker for lower voltage and a contact'maker for higher voltage coperating with said wheel for sending one or more impulses over any one of said line wires, means for connecting any one of said operating elements with any unit of said switch-board, i'

and means at the local station for recording impulses sent over said line wires.

5. A telephone call recorder comprising a multiple switch-board, line circuits connected thereto, local stations on said circuits, an impulse sending mechanism consisting of a plurality of independent operating elements each including a rotatable wheel and means coperating with said wheel for sending currents of different voltage over said line cirrents of different voltage over said line circuits, means for connecting any one of said operating elements to any unit of said switchboard, and means at each local station for recording impulses sent over the line circuit.

7. A telephone call recorder comprisingfa multiple switch-board, line circuits and local stations, a selective sending mechanism adapted to be connected to said switchboard, means at a local station for recording impulses sent over the line circuit including a Itype wheel, and electrical devices actu-ated by currents through said line circuit for rotating said Wheel ,and electrical devices for operating said recording mechanism after saidwheel stops rotating. Y

8. A telephone call recorder comprising a multiple switch-board, line circuits and local stations connected therewith, a sending mechanism adapted to be connected to said switch-board, recording mechanism at a local station for recording impulses sent over said line circuit including a type-wheel and printing devices, electrical devices actuated by currents from the line circuit for operating said recording mechanism, said sendin mechanism including means for causing said electrical devices to actuate said type wheel Without printing until the desired digit is brought into position and then to actuate the printing devices.

9. A telephone call recorder comprising'a multiple switch-board, line circuits and local stations connected therewith, a sending mechanism adapted to be connected to said switch-board, recording mechanism at alocal station for-recording impulses sent over the line circuit including a type wheel and printing devices, electrical devices including a magnet actuated by currents over said line circuit for rotating said type-Wheel and electrical devices including a magnet actuated by currents sent over said line circuit for operating said printing` devices5 said sending mechanism including means for causing one magnet to rotate said type-wheel until the desired digit is brought into position and then for switching the current over the line wire to the other magnet for operating the printing mechanism.

l0. A telephone call recorder comprising a multiple switch-board, line circuits and local stations connected therewith, a sending mechanism adapted to be connected to any unit of said switch-board, recording mechanism at a local station tor recording impulses sent over the line circuit including a type wheel and printingr devices and paper teeding devices, electrical devices including a magnet actuated by currents over said line circuit for rotating said type-wheel and electrical devices after the type wheel stops rotating including a magnet actuated by currents sent over said line circuit for operating said printing devices andpaper Jfeeding devices, said sending mechanism including means for causing one magnet to rotate said wheel until the desired digit is brought into position and means for switching the current over the line circuit to the other magnet for operating` said printing devices and paper feeding devices.

l1. A telephone call recorder comprising a multiple switch-board, line circuits and local stations, a selective sending mechanism adapted to be connected with said switchboard, means at a local station for recording impulses sent over the line circuit including aA type wheel and printing` devices, two sets of electrical devices operatively connected to the line circuit and operated by currents over the line circuit, and members actuated by said sending mechanism for sending a current ot lower voltage over the line circuit for operating one set of said electrical devices for rotating said type wheel until the desired digit is brought into position and then for switching` to send a higher voltage over the, same circuit for operating the other set oit' electrical devices to effect the recording of the digit.

In testimony whereof, I set my hand in the presence of two witnesses, this 12th day of April, 1912.

HAROLD L. WLXRIVICK.

Witnesses:

J. E. BAGGETT, A. L. JACKSON. 

